Vol. 11, Issue 2 (2022)

Author(s):
Anshu Kumar, Abhijeet Ghatak, Huma Nazneen, Venu Emmadi, Badavath Kishore and Wahid Ul Hasan

Abstract:
The antifungal activity of copper nanoparticle (CuNP) and silver nanoparticle (AgNP) was investigated against the two foliar pathogen Alternaria brassicicola and Bipolaris sorokiniana. The efficacy of CuNP and AgNP were determined in reducing the mycelia growth of the pathogen at 100 ppm and 1000 ppm. Mycelial growth is moderately inhibited by CuNP. At 100 ppm concentrations, AgNP demonstrated radial growth inhibition in A. brassicicola by and B. sorokiniana 49.6% and 68.2%, respectively. Radial growth inhibition further increased to 61.7% in A. brassicicola and 86.4% in B. sorokiniana at 1000 ppm application of AgNP. CuNP has been shown to suppress the fungi; however, it was far less efficient than AgNP and the fungicide carbendazim. The information revealed in this work may be useful in synthesizing nanoparticles commercially for management of diseases caused by A. brassicicola and B. sorokiniana.